‘Abdallah b. ‘Amr reported God’s messenger as saying, “The major sins are associating other objects of worship with God, disobedience to parents, murder, and deliberate perjury (al-yamin al-ghamus)."
Bukhari transmitted it. Anas’s version has “false witness”* (shahadat al-zur) instead of ‘‘deliberate perjury."
Narrated ‘Abdallah b. Mas'ud said that a man asked God’s messenger, what was the greatest sin in God’s sight, to which he replied, “That you should treat anything as equal to God when He has created you." “What next?’’ he asked, to which he replied, “That you should kill your child for fear that he may eat a:
“Those who do not invoke another god along with God, or kill one whom God has declared inviolate without a just cause, or commit fornication..." 1
Abu Huraira reported God’s messenger as saying, “Avoid the seven noxious things." When his hearers asked, “What are they, messenger of God?" he replied, “Associating anything with God, magic, killing one whom God has declared inviolate without a just cause, devouring usury, consuming the property of an orphan, turning back when the army advances, and slandering chaste women who are believers but indiscreet."
He also said that he asked the Prophet what was the most excellent aspect of faith, and received the reply, “That you should love for God’s sake, hate for God’s sake, and employ your tongue in making mention of God.” “What more, messenger of God?” he asked and was told, “That you should like other people to have what you like yourself, and dislike that they should have what you dislike yourself.”